The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1989
Filed:
Dec. 23, 1987
Shuji Yoshizawa, Tokyo, JP;
Tatsuya Ikezue, Machida, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An electrophotographic photoreceptor comprising a conductive substrate and a photoconductive layer disposed on the conductive substrate to generate photocarriers upon light radiation. The photoconductive layer comprises a charge-generating layer and a charge-retaining layer. At least part of the charge-generating layer has a plurality of thin microcrystalline semiconductor layers containing silicon as a major constituent and at least one element selected from the group consisting of carbon, hydrogen, and nitrogen. The plurality of microcrystalline layers produce a superlattice structure. The adjacent thin microcrystalline semiconductor layers have different element concentrations. At least part of the charge-retaining layer has a first amorphous semiconductor layer containing silicon as a major constituent and a second amorphous semiconductor layer containing silicon as a major constituent, and at least one element selected from the group consisting of carbon, oxygen, and nitrogen.